Math Problem Statement

Express the interval in set-builder notation and graph the interval on a number line.

[-3, 3)

Solution

The interval [3,3)[-3, 3) in set-builder notation is expressed as:

{x3x<3}\{ x \mid -3 \leq x < 3 \}

This represents the set of all real numbers xx such that xx is greater than or equal to 3-3 and strictly less than 33.

Graphing on a Number Line:

  • A closed dot is used at x=3x = -3 to indicate that 3-3 is included in the interval.
  • An open dot is used at x=3x = 3 to indicate that 33 is not included in the interval.
  • The segment between 3-3 and 33 is shaded to show all numbers between them.

Would you like me to provide more details or answer any questions? Here are five related questions:

  1. How do you express an open interval (a,b)(a, b) in set-builder notation?
  2. What is the difference between a closed and open interval?
  3. How would the graph of (3,3](-3, 3] differ from this interval?
  4. How do we represent the union of two intervals on a number line?
  5. Can intervals include infinity, and how would that affect set-builder notation?

Tip: Remember, square brackets [][ ] mean the endpoint is included, while parentheses ()( ) mean the endpoint is excluded.

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Math Problem Analysis

Mathematical Concepts

Set Notation
Intervals
Number Line Representation

Formulas

Set-builder notation: { x | condition }
Closed interval: [a, b] includes both endpoints
Open interval: (a, b) excludes both endpoints

Theorems

Interval Theorem
Representation of Real Numbers on Number Lines

Suitable Grade Level

Grades 6-8